Method of forming can-body flanges.



' P; P. MoGOL'L. METHOD OF FORMING CAN BODY FLANGES APPLi OOOO o1;FFFFFF 1:3. 66666 a.

PATENT-ED AUG. 18, 1908.

U ITED s rnansgr r 'NT FRANCIS P. MOCOLL, or s'r. ANDREWS, NEWBRUNSWICK, CANADA, ASSIGNOR TO AMERICAN KEY CAN COMPANY, OF CHICAGO,ILLINOIS, A CORPORATION OF NEW JERSEY.

METHOD OF FORMING CAN-BODY FLANGES.

Specification of Letters Patent.

Patented Aug. 18, 1908.

Application filed. Februaryfi, 1905. Serial No. 2%,423.

citizenof the United States, residing at St.

Andrews, Province of New Brunswick, Do-

minion of Canada, have invented a certain new and useful Improvement inMethods of Forming Can-Body Flanges, and declare the following to be afull, clear, and exact description of the same, such as 'will enableothers skilled in the art to which it pertains to-make and use the same,reference being had to the accompanying drawings, which form a part ofthis specification.

My invention has for its object the produc-' tion of a method forforming on can bodies, a reinforced flange to which the top or end(depending on the style or shape of can) may be soldered.

v In the manufacture of what are known as roll top cans the body isprovided with an outwardly extending flange, usually at right angles tothe plane of the body, to which the top is soldered after the contentsare placed in the can and from which the top is torn (usually by meansof a key) when it is de-. sired to open the can. In practice it has beenfound desirable to make this body flange of additional thickness toenable it to resist thetenacity of the solder, and my present inventionrelates to the method of forming this flange. 1

In the drawings Figure 1 illustrates the blankbefore it has beenoperated upon. Fig. 2 is a plan view of the blank after the firstoperation. Fig. 3 is a section on the line 33 of Fig. 2. Fig. 4 is avertical section of the can body immediately after it has been formed.Fig. 5 is a section after the outstanding flangehas been formed thereon.

In carrying out the invention A represents to the proper size and shape.By any suitable machine or tool the edge a of the blank is bent ordoubled upon itself as in Figs. 2 and.

3 to provide the thickened edge a. The

blank is then put into any of the well known forms of body machines and.formed into a body B, see Fig. 4. The style of body seam is immaterial.

of flanging machines and the flange 6 formed; Thus, I have produced abody B having the the blank, consisting of a sheet of metal cut' Thebody thus formed is then placed in any of the well known forms solderingflange 1), reinforced as desired, but

accurate in its dimensions, smooth on its surface, and forming a sharpangle With the body so that the top or end can be readily andeffectually soldered thereto. It is obvious that many different machinesand tools may be employed to turn and fold the edge of the blank; toform the body; and to flange the latter, and I do not limit myself tothe use of any particular means for accomplishing these steps, theinvention residing in the method of manipulating the blank to producethe desired flange on the body.

' What I claim is:

The method of forming a can body which consists in doubling the metal ofthe blank back upon itself at the edge which is to form the top of thecan, forming a tube from the blank, and finallv bending the doubledportion of the bodylaterally at an angle. to the body proper to form athickened. flange.

In testimony whereof, I sign this specification in the presence of twowitnesses.

FRANCIS P. MoGOLL.

